code: def test_all_any_cleanup_at_single_predicate_case() -> None:
      plan = (
          pl.LazyFrame({"a": [1], "b": [2]})
          .select(["a"])
          .drop_nulls()
          .explain()
      )
      assert "horizontal" not in plan
      assert "all" not in plan
  
imports: from datetime import date, datetime, timedelta
  from typing import Any
  import numpy
  import pytest
  import polars
  from polars.testing import assert_frame_equal
  from polars.testing.asserts.series import assert_series_equal
label_desc: Use image node_id 21 for calling a global function with example usage: test_all_any_cleanup_at_single_predicate_case() without return types